only instructed and skilled people may work ‘live’. the industrial type
b. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre. continuity test
b. Zone protection.
23. one may work ‘live’
c.
27. Every caravan pitch must have least one 16A socket outlet for
connection caravan. buried depth 600mm. All final circuits bathroom, both power and lighting, must have:
a. polarity test.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19.
20. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply. RCD protection
c.
21. earth fault loop impedance
c. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom.
26. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a.
.
24. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications. functional test
d.
25. overcurrent protection
b. IPX7 protection
d. only competent people may work ‘live’
d. protected additionally RCD
d. The Electricity Work Regulations state that:
a. protected from overcurrent
c. everyone may work ‘live’
b.
22. The socket outlet must be:
a
